KR100452472B1 - Method for serving call waiting/2-number calling in a mobile communication system - Google Patents

Abstract

The present invention provides a call waiting / 2-number service function during a call in a mobile communication system to display a called number when a call waiting tone is transmitted when a third party sets up a call while a subscriber terminal is busy. The present invention relates to a call waiting / 2-number service method, wherein a call waiting / 2-number service function simultaneously sets a call from a third subscriber during a call to a function holder's number (parent or child number). It transmits a tone indicating that the call waiting function is performed to the function holder terminal, and simultaneously displays the called number entered by the third subscriber to inform which of the two phone numbers is allocated to the function holder terminal. Thus, the call waiting / 2-number service function holder can know the phone number entered by the third party subscriber during the call, and the function holder can put the current subscriber on hold using the "SEND" key if the call is important. In this way, you can talk to a third-party subscriber.

Description

Method for serving call waiting / 2-number calling in a mobile communication system}

The present invention relates to a call waiting / 2-number service in a code division multiple access (CDMA) mobile communication system. The present invention relates to a call waiting / 2-number service method in a mobile communication system that displays a called number when a call waiting tone is transmitted when a third party sets a call in a call state.

In general, a CDMA mobile communication system has a two-number service that assigns two numbers to an individual and connects incoming calls to each number to one terminal, and a third subscriber to a busy subscriber. When a call is set up, the function holder connects a tone indicating the incoming call from another subscriber and operates the 2-Number service as a supplementary service that allows the function holder to call a third party when the user presses the "SEND" key. There is.

However, in the general CDMA mobile communication system capable of the above additional services, since the two additional services are independently performed, the holder having both the two-number service and the call waiting service function may not be able to perform the call waiting function. At the time of execution, when the third party set up a call, only the tone indicating the incoming call was notified, and there was no function of displaying the called number.

That is, when a subscriber having two additional service functions as described above performs the call waiting function, when a third party sets up a call, a tone indicating an incoming call is generated and the call waiting service is performed. Since subscribers with additional service functions of branches do not know which of the two numbers assigned to them is called, sometimes there is a disadvantage that they cannot make an important call.

Typically, a two-number service function holder sets the number of one of the two numbers assigned to him as the first number, tells only the person who is very important and wants to call, and the other number is his / her number ( Second Number) and the general tendency to inform other people through the public, but conventionally there is no way to display the incoming number during the call to the holder of the two functions as described above, the current number is urgent When an important call is called by the parent number, it often happens that the important caller is not able to know the important call.

Accordingly, the present invention has been proposed to solve various problems occurring during call waiting and two-number service in a conventional CDMA mobile communication system.

An object of the present invention is a mobile communication system for displaying a called number when a call waiting tone is transmitted when a third party sets up a call while a terminal of a call waiting / 2-number service function subscriber is busy. To provide a call waiting / 2-number service method.

"Waiting for call in the mobile communication system / two-number service method" according to the present invention for achieving the above object,

Call waiting / 2-number service function When the concurrent holder sets up a call from the third subscriber during the call to the function holder's number (parent or child number), it transmits a tone indicating the call waiting function to the function holder's terminal. The phone number displayed by the third party subscriber is displayed to indicate which of the two numbers assigned to the holder terminal is called.

This way, the call waiting / 2-number service function holder can know the phone number entered by the third party subscriber during the call, and the function holder can put the current subscriber on hold using the "SEND" key if the call is important. In this way, you can talk to a third-party subscriber.

1 is a block diagram of a mobile communication system for call waiting / 2-number service during a call in the present invention;

2 is a call processing procedure when a third subscriber calls the parent number of a call waiting / 2-number service function subscriber in the present invention;

3 is a call processing procedure when the third subscriber calls the party number of the call waiting / 2-number service function subscriber in the present invention,

4 is a call processing procedure of a call waiting / 2-number service subscriber in a call in the present invention;

5 is a flowchart illustrating a call waiting / 2-number service method in a mobile communication system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

131, 232, 233 ..... Call processing control block

141 ..... Visitor Locator

231 ..... Exhibit Function Control Block

110, 210, 250 ..... Mobile station (first to third subscribers)

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention according to the technical spirit as described above.

1 is a block diagram of a mobile communication system for call waiting / 2-number service during a call in the present invention.

Here, reference numeral 100 denotes a first service area in which one mobile telecommunication switch is in charge of service, reference numeral 200 denotes a second service area in which another mobile telecommunication exchange is in charge of service, and reference numeral 300 denotes the first service. The mobile communication exchanger of the area 100 and the mobile communication exchanger of the second service area 200 interface with incoming call location information and call setup information and represent a home location register (HLR) in which subscriber information is registered.

In the above, the mobile communication system of the first service area 100 includes a mobile station (MS3) 110, a control station (BSC) 120, a mobile communication switch (MSC1) 130, and a visitor location register ( VLR1) 140.

The mobile communication system of the second service area 200 also includes a mobile station (MS2) 210, a control station (BSC) 220, a mobile communication switch (MSC2) 230, and a visitor location register (VLR2). It consists of 240.

In this case, the mobile station MS1 250 included in the mobile communication system of the second service area 200 is additionally illustrated to explain that the mobile station 210 is in a call with another mobile station 250.

In the mobile communication system configured as described above, the operation of call waiting / 2-number service is as follows.

In Fig. 1, the call waiting / 2-number service function holder mobile station is a mobile station MS2 corresponding to the reference numeral 210.

First, when the third subscriber in the first service area 100, that is, the mobile station 101, makes a call request while the mobile station MS2 and another mobile station MS1 are busy, the control station 120 receives the call. The call exchange request is transmitted to the mobile communication switch 130, and the mobile communication switch 130 receives the request information of the calling subscriber to the visitor location register 140.

The visitor location register 140 receives the information and transmits the information to the calling subscriber to the mobile communication switch 130, and when the mobile communication switch 130 receives the information, the visitor location register 140 transmits the incoming location and call setting information to the home location register 300. Require.

The home location register 300 that has received the incoming location and call setup information request requests the incoming call setup information to the mobile communication switch 230 of the second service area 200, and receives the received mobile communication switch ( 230 transmits a response to the incoming call setting information request to the home location register 300.

When the home location register 300 receives a response to the incoming call setup information request, the home location register 300 transmits a response to the incoming location and the call setup information request to the mobile communication switch 130, and receives the first service area 100. The mobile communication exchange 130 of the) requests an incoming call establishment to the mobile communication exchange 230 of the second service area 200.

The mobile communication exchange 230 receiving the incoming call establishment request requests the called party information to the visitor location register 240 and requests the called party to call the receiving station when the response to the called party information is received. .

Upon receiving this, the control station 220 calls the mobile station 210 which is the called subscriber. When the control station 220 receives the response of the call from the called mobile station 210, the control station 220 transmits the called subscriber call response to the mobile communication switch 230.

Upon receiving this, the mobile communication switch 230 requests the mobile station 250 to transmit a pending sound, and at the same time, responds to a call setup response to the mobile communication switch 130 in the first service area 100. The control unit 120 notifies the control station 120 of the completion of the call setup, and the control station 120 which has received the notification is notified of the completion of the call setup to the mobile station 110.

Here, when the calling subscriber calls the party number of the call waiting / 2-number function holder, the home location register 300 transmits the mother number information and the redirect reason to the calling forwarding unconditional (CFU) to the calling mobile communication exchange 130. The origination re-requests the called location and call setup information request to the parent number.

2 is a call processing procedure when a third subscriber calls the parent number of a call waiting / 2-number service function subscriber in the present invention.

First, when the mobile station 210 of the call waiting / 2-number service function holder is in a call with another terminal 250 as in step S101, as shown in step S102, the third subscriber mobile station 110 attempts to make a call. The mobile communication exchange 130 receives the dialed digit. The dialed digit includes Calling Number Identification (CNI) information, which may include one or more calling party numbers, calling party address numbers, rerouting numbers and rerouting address numbers.

Next, in step S103, the mobile communication exchange 130 requests the information on the mother number to the home location register 300 (LOCREQ [MIN1]). In step S104, the home location register 300 includes the mother number in the calling number CPNS to configure ROUTREQ and transmits the ROUTREQ to the visitor location register 240 of the second service area 200.

The visitor location register 240 transmits the ROUTREQ to the currently serving mobile communication exchange 230 in step S105. The mobile communication exchange 230 receiving the ROUTREQ allocates a Temporary Local Directory Number (TLDN) in step S106, transmits the information to the visitor location register 240 by including this information in the routreq, and stores the received CPNS information at the same time. do.

In step S107, the visitor location register 240 transmits the received routreq to the home location register 300, and the home location register 300 receives the locreq to the calling mobile communication exchange 130 in step S108. send. Here, locreq includes routing information in the form of a termination list parameter.

Next, in step S109, the mobile communication exchange 130 of the first service area 100 and the mobile communication exchange 230 of the second service area 200 establish a communication path through mutual data communication. If set, the mobile communication exchange 230 of the second service area 200 provides a pending sound transmission to the mobile station 250 in step S110, and provides a CW notification to the mobile station 210. Here CW notification contains appropriate called number information.

Although not shown in the figure, the mobile station 210 displays the called party number on the screen when the call waiting tone is received. The called party number is the parent number of the function holder.

3 is a call processing procedure when the third subscriber calls the party number of the call waiting / 2-number service function subscriber in the present invention.

First, when the mobile station 210 of the call waiting / 2-number service function holder is in a call with another terminal 250 as in step S201, and the third subscriber mobile station 110 attempts to make a call as in step S202. The mobile communication exchange 130 receives the dialed digit. The dialed digit includes Calling Number Identification (CNI) information, which may include one or more calling party numbers, calling party address numbers, rerouting numbers and rerouting address numbers.

Next, in step S203, the mobile communication exchange 130 requests the information on the mother number to the home location register 300 (LOCREQ [MIN1]). It includes the calling subscriber number.

In step S204, the home location register 300 receives the mother number, the RDND (Redirecting Number Digits), and the redirection reason in the Call Forwarding Unconditional (CFU), and transmits the same to the mobile communication switch 130. The exchange 130 sends the LOCREQ back to the home location register 300, including the mother number and the RDND, in step S205.

The home location register 300 configures ROUTREQ by including the mother number and the RDND in the calling number (CPNS) in step S206, and transmits the ROUTREQ to the visitor location register 240 of the second service area 200.

The visitor location register 240 transmits the ROUTREQ to the currently serving mobile communication exchange 230 in step S207. The mobile communication exchange 230 receiving the ROUTREQ allocates the TLDN in step S208, transmits the information to the visitor location register 240 by including this information in the routreq, and stores the received CPNS information at the same time.

In step S209, the visitor location register 240 transmits the received routreq to the home location register 300, and the home location register 300 receives the locreq to the calling party mobile communication exchange 130 in step S210. send. Here, locreq includes routing information in the form of a termination list parameter.

Next, in step S211, the mobile communication exchange 130 of the first service area 100 and the mobile communication exchange 230 of the second service area 200 establish a communication path through mutual data communication. If set, the mobile communication exchange 230 of the second service area 200 provides a pending sound transmission to the mobile station 250 in step S212, and provides CW notification to the mobile station 210. Here CW notification contains appropriate called number information.

Although not shown in the figure, the mobile station 210 displays the called party number on the screen when the call waiting tone is received. The called party number is the party number of the function holder.

4 is a flowchart illustrating call processing of a call waiting / 2-number service subscriber during a call in the present invention.

First, in the state where the mobile station 210 of the call waiting / 2-number service function holder and the other terminal 250 are busy as in step S301, the third subscriber 110 waits for call as in step S302. The call setup is made to the number service function holder. At this time, the function holder is in a busy state as is well known.

Next, in step S303, the call processing control block 131 transmits a message (InfoICSetup) requesting the called subscriber information to the visitor location register 141, and the received visitor location register 141 receives the incoming subscriber in step S304. Information is transmitted to the call processing control block 131 (InfoICSetupAck).

Next, in step S305, the call processing control block 131 determines whether the called subscriber owns the additional service function during the call when the subscriber state is busy. As a result of this determination, when the called subscriber owns the additional service function during the call, the call waiting service is requested to the call processing control block 232 in the mobile communication exchange currently serving in step S306 (CAWSvcRP).

The call processing control block 232 receiving this request the call waiting service to the call waiting function control block 231 in step S307 (CAWSvcRQ), and accordingly the call waiting function control block 231 is called by the called party in step S308. Verify that you are the owner of the 2-Number Service Function. As a result of this confirmation, when the called party is the two-number service function owner, in step S309, a response to the incoming paging request is sent to the call processing control block 131 (PageRP).

The call processing control block 131 which receives this informs the called subscriber information to the call waiting function control block 231 in step S310 (CdSubsInfoRP). At this time, the originating party's first incoming call number (mother number or child number) is included.

The call waiting function control block 231 notified of the called party subscriber information responds that the called party subscriber information is received by the call processing control block 131 in step S311 (AlertingRP).

Next, in step S312, the call waiting function control block 231 determines whether the function holder inputs the "SEND" key, and when the "SEND" key is input, the called party number information is sent to the mobile station 250 in step S313. Send (Setup_CI). In addition, in step S314, the call processing control block 233 is notified of the additional service to the other subscriber in the call (SubsSvcack).

The call processing control block 233 receiving this transmits a response to whether the additional service is performed in step S315 to the call waiting function control block 231 (SubSvcAck), and receives the call waiting function control block 231. In step S316, the mobile station 210 transmits a message requesting the hold sound to be connected (HoldToneConnRQ).

Next, upon receiving a response to the called party's call initiation in step S317, the call processing control block 131 is notified of the called party's response (CdAnsRP), and in step S318, the additional service to the call processing control block 131. Notify (SubsSvcRP).

The call processing control block 131 notified of the additional service transmits a response to whether the additional service is performed in step S319 to the call waiting function control block 231 (SubsSvcAck). Will be done.

5 is a flowchart illustrating a call waiting / 2-number service method in a mobile communication system according to the present invention.

As shown in the figure, the call waiting / 2-number service function holder holding a call between the first subscriber and the second subscriber, while the second subscriber registers the call waiting / 2-number service function in the home location register. (2401 to S402) informing the function holder of the call setup request as a second subscriber; Confirming whether the second subscriber has the additional service function during a call after notifying the second subscriber of the incoming call (S403); If the second subscriber does not have the additional service function during the call, the first subscriber maintains the initial call state (call between the first subscriber and the second subscriber) and sends a busy tone to the third subscriber and calls the third subscriber. (S404 ~ S405) to release the; If the second subscriber has the additional service function during the call, notifying a response to the call and confirming whether the second subscriber has the number display function (S406 to S407); Performing a general call waiting function when the number display function is not provided (S408); Transmitting the called number to the second subscriber while the call waiting tone is transmitted to the second subscriber's terminal (S409 to S410); When the second subscriber manipulates the SEND KEY, a step of selectively connecting the first subscriber or the third subscriber with the second subscriber to control the call is possible (S411).

In the mobile communication system according to the present invention described above, the call waiting / 2-number service method will be described in detail as follows.

First, a few definitions of terms discussed to aid understanding in describing the present invention are as follows.

Second subscriber: Holder of call waiting / 2-number service function

First subscriber: subscriber who is first talking to the second subscriber

Third subscriber: If the second subscriber requests a call setup to the second subscriber during the call between the first subscriber and the second subscriber, and the second subscriber has the additional service function during the call, the second subscriber is called according to the selection of the second subscriber. Available subscribers.

As shown in Fig. 5, in the state in which the second subscriber registers the call waiting / 2-number service function in the home location register in step S401, the call waiting / 2-number waiting for a call between the first subscriber and the second subscriber. If call setup is requested to the service function holder (second subscriber), the function holder is notified of this.

Next, in step S403, the second subscriber is notified of the incoming call, and then the second subscriber checks whether the second subscriber has the additional service function during the call, and if the second subscriber does not have the additional service function during the call, step S403. In step S404, the first call state (call between the first subscriber and the second subscriber) is maintained, the busy tone is sent to the third subscriber, and the third subscriber's call is released in step S405.

On the contrary, when the second subscriber has the additional service function during the call, a response to the call is notified at step S405, and at step S407, it is checked whether the second subscriber has the number display function.

As a result of this check, if the second subscriber does not have the number display function, go to step S408 to perform a general call waiting function. If the second subscriber has the number display function, go to step S409 to uui_digit to the control station (BSC). The information is transmitted, and in step S410, the called party transmits the called number during call waiting tone transmission to the second subscriber so that the terminal of the second subscriber can display it.

Then, the second subscriber can see the called number displayed on the screen during the call, and can know which of the two numbers the third subscriber has dialed.

Next, when the second subscriber operates the SEND key in step S411, the second subscriber selectively connects the first subscriber or the third subscriber with the second subscriber to control the call.

If the second subscriber or another subscriber releases the call while the second subscriber selectively performs the call with the first subscriber or the third subscriber, the call waiting function is automatically terminated.

According to the present invention described above, "waiting call during call / 2 / 2-number service method in the mobile communication system", when the third subscriber sets a call during the call, there is an advantage that the called number can be displayed on the liquid crystal display of the terminal. .

In addition, the function holder has the advantage that it is possible to prevent the important phone call from receiving the important call because it is unknown to the destination number as in the prior art.

Claims (2)

In a call waiting / 2-number service method in a mobile communication system, While the second subscriber has registered the call waiting / 2-number service function in the home location register, the call waiting / 2-number service function holder (second subscriber) is placed in a call waiting between the first subscriber and the second subscriber. Notifying the function holder if this is required; Confirming whether the second subscriber has an additional service function during a call; If the second subscriber does not have the additional service function during the call, the first subscriber maintains the initial call state (call between the first subscriber and the second subscriber) and sends a busy tone to the third subscriber and calls the third subscriber. Releasing it; If the second subscriber has the additional service function during the call, notifying the answer of the call and confirming whether the second subscriber has the number display function; Performing a general call waiting function when the number display function is not possessed; Transmitting the called number to the second subscriber while the call waiting tone is transmitted to the second subscriber's terminal to display the number when the number display function is held; And if the second subscriber manipulates the send key, selectively connecting the first subscriber or the third subscriber with the second subscriber to control the call. Medium call waiting / 2-number service method. The subscriber system of claim 1, wherein the second subscriber represents a call waiting / 2-number service function holder, the first subscriber represents a subscriber who is first in a call with the second subscriber, and the third subscriber represents a first subscriber and a first subscriber. A call request is made to the second subscriber during a call between two subscribers, and when the second subscriber has an additional service function during the call, the subscriber can call the second subscriber according to the selection of the second subscriber. Call waiting / 2-number service method in a mobile communication system.